In normal research or engineer testing, sometime the signal from rotating objects is wanted. At that time, the traditional cable-necessary data acquisition system is not convenient or even unavailable in those testing situation. A small-size wireless date acquisition system was developed to accomplish the acquisition of signal where the common cable-necessary data acquisition system is inapplicable such as from rotating objects. This paper introduced a wireless date acquisition system which is based on digital transceiver module, and it describes the design issues and implementation of the system, especially on how to improve reliability. The application of the system in practical experiment has showed that it is satisfactory for the signal acquisition from rapidly revolving body.

Muzzle velocity is an very important parameter in the small caliber air defense flake system with timing fuze. The precise, instant measurement of the muzzle velocity of each round can greatly improve the weapon's air defense efficiency by adjusting the time constant according to its real muzzle velocity. The theory and implementation of the measuring system is introduced. As key point in the ystem, the error control steps are detailed to discuss especially about the magnet washer. Besides, to reduce time consummation for calculation, a novel arithmetic based on pre-calculated table was put forwarded. Experiments have shown that this muzzle velocity measuring system has the advantages of muzzle attachable, high precision and short process time.

In this paper, the distribution and characteristics of the Earth's magnetic field are analyzed. A approach of the turns-counting applied to proximity fuze based on the fluxgate sensor is proposed. It is deduced that the output signature of fluxgate sensor is the sine/cosine function of a projectile's rotational angle. The circuit used to process signal and a micro-stored data acquisition system are designed. The projectile's turns can be exactly gained by calculating the number of the output signal cycle. In this way, the basis for precisely controlling the point blasting for the pinning round' proximity fuze is provided.

文本采用精密地磁探测仪（PCM）探测地表不同高度的地磁变化，从而可推断出地下小于20米深度的空穴、战斗部、非土质异形物。文章较详细地论述了探测机理、测试系统构成、测试数据分析。此方法可用在高速公路路基地下洞穴体、试验靶场地下弹丸寻找过程中。

A special storage testing system for the examination of ejection canister is designed in this paper. The compositions of the storage testing system, the choosing of the sensor, the design of the power supply and hardware as well as software are presented. Testing curves of both pop-up and pop-down ejection seat are given in the paper. And the reliability of the data acquisition system for the ejection canister testing is validated through the application.